"The proud mother Harry Goldberg has been e..." joke

The proud mother
Harry Goldberg has been elected the next president of the United States--the first Jewish boy to reach the Whitehouse. He is very proud and phones his mother in New York to invite her to the inauguration.
Harry: Momma, guess what! I`ve just been elected president, won`t you come to my inauguration?
Mother: Harry! You know I hate trains. I can`t face the journey all the way to Washington. Maybe next time.
Harry: Momma! You will take no train. Air Force One will collect you. The journey will be over in 30 minutes. Come to my inauguration, please...
Mother: Harry, I hate hotels. The non-kosher food! Nahh, maybe next time.
Harry: Momma!! You will stay in the White House, a kosher chef to yourself. PLEASE come.
Mother: Harry! I have nothing to wear!
Harry: I have someone on his way to take you to Macy`s and Bloomingdale`s to make you look perfect. You must come!!!
Mother: Okay, okay, I suppose I will come.
Inauguration day comes. Mother is on the front row, next to the Secretary of State. Harry is called up to become the next president. Mother digs the Secretary of State in the ribs and says, "Hey, you see that boy Harry? His brother is a very successful doctor!"